Zobrazeno 1 - 10
of 84
pro vyhledávání: '"Uemura, Yasutomo J."'
Autor:
Sakamoto, Shoya, Zhao, Guoqiang, Shibata, Goro, Deng, Zheng, Zhao, Kan, Wang, Xiancheng, Nonaka, Yosuke, Ikeda, Keisuke, Chi, Zhendong, Wan, Yuxuan, Suzuki, Masahiro, Koide, Tsuneharu, Tanaka, Arata, Maekawa, Sadamichi, Uemura, Yasutomo J., Jin, Changqing, Fujimori, Atsushi
Perpendicular magnetic anisotropy of the new ferromagnetic semiconductor (Ba,K)(Zn,Mn)$_{2}$As$_{2}$ is studied by angle-dependent x-ray magnetic circular dichroism measurements. The large magnetic anisotropy with the anisotropy field of 0.85 T is de
Externí odkaz:
http://arxiv.org/abs/2010.00158
Autor:
Uemura, Yasutomo J.
Publikováno v:
In Physica C: Superconductivity and its applications 15 November 2023 614
Autor:
Frandsen, Benjamin A., Kalcheim, Yoav, Valmianski, Ilya, McLeod, Alexander S., Guguchia, Z., Cheung, Sky C., Hallas, Alannah M., Wilson, Murray N., Cai, Yipeng, Luke, Graeme M., Salman, Z., Suter, A., Prokscha, T., Murakami, Taito, Kageyama, Hiroshi, Basov, D. N., Schuller, Ivan K., Uemura, Yasutomo J.
Publikováno v:
Phys. Rev. B 100, 235136 (2019)
We present a coordinated study of the paramagnetic-to-antiferromagnetic, rhombohedral-to-monoclinic, and metal-to-insulator transitions in thin-film specimens of the classic Mott insulator V$_2$O$_3$ using low-energy muon spin relaxation, x-ray diffr
Externí odkaz:
http://arxiv.org/abs/1910.10188
Autor:
Uemura, Yasutomo J.
Publikováno v:
Physical Review Materials 3 (2019) 104801
High-Tc cuprate, A3C60 and other unconventional superconductors (SCs) have very high Tc with respect to the energy scale of superconducting (SC) charges inferred from the superfluid density (SFD). The observed linear dependence of Tc on the SFD can h
Externí odkaz:
http://arxiv.org/abs/1910.02388
Autor:
Cheung, Sky C., Guguchia, Zurab, Frandsen, Benjamin A., Gong, Zizhou, Yamakawa, Kohtaro, Almeida, Dalson E., Onuorah, Ifeanyi J., Bonfa, Pietro, Miranda, Eduardo, Wang, Weiyi, Tam, David W., Song, Yu, Cao, Chongde, Cai, Yipeng, Hallas, Alannah M., Wilson, Murray N., Munsie, Timothy J. S., Luke, Graeme, Chen, Bijuan, Dai, Guangyang, Jin, Changqing, Guo, Shengli, Ning, Fanlong, Fernandes, Rafael M., De Renzi, Roberto, Dai, Pengcheng, Uemura, Yasutomo J.
Publikováno v:
Phys. Rev. B 97, 224508 (2018)
Muon spin rotation and relaxation studies have been performed on a "111" family of iron-based superconductors NaFe_1-xNi_xAs. Static magnetic order was characterized by obtaining the temperature and doping dependences of the local ordered magnetic mo
Externí odkaz:
http://arxiv.org/abs/1802.04458
Autor:
Guo, Shengli, Man, Huiyuan, Ding, Cui, Zhao, Yao, Fu, Licheng, Gu, Yilun, Zhi, Guoxiang, Frandsen, Benjamin A., Cheung, Sky C., Guguchia, Zurab, Yamakawa, Kohtaro, Chen, Bin, Wang, Hangdong, Deng, Z., Jin, C. Q., Uemura, Yasutomo J., Ning, Fanlong
Publikováno v:
Phys. Rev. B 99, 155201 (2019)
Diluted ferromagnetic semiconductors (DMSs) that combine the properties of semiconductors with ferromagnetism have potential application in spin-sensitive electronics (spintronics) devices. The search for DMS materials exploded after the observation
Externí odkaz:
http://arxiv.org/abs/1712.06764
Autor:
Tam, David W., Song, Yu, Man, Haoran, Cheung, Sky C., Yin, Zhiping, Lu, Xingye, Wang, Weiyi, Frandsen, Benjamin A., Liu, Lian, Gong, Zizhou, Ito, Takashi U., Cai, Yipeng, Wilson, Murray N., Guo, Shengli, Koshiishi, Keisuke, Tian, Wei, Hitti, Bassam, Ivanov, Alexandre, Zhao, Yang, Lynn, Jeffrey W., Luke, Graeme M., Berlijn, Tom, Maier, Thomas A., Uemura, Yasutomo J., Dai, Pengcheng
We use neutron diffraction and muon spin relaxation to study the effect of in-plane uniaxial pressure on the antiferromagnetic (AF) orthorhombic phase in BaFe$_2$As$_2$ and its Co- and Ni-substituted members near optimal superconductivity. In the low
Externí odkaz:
http://arxiv.org/abs/1702.03064
Autor:
Frandsen, Benjamin A., Gong, Zizhou, Terban, Maxwell, Banerjee, Soham, Chen, Bijuan, Jin, Changqing, Feygenson, Mikhail, Uemura, Yasutomo J., Billinge, Simon J. L.
Publikováno v:
Phys. Rev. B 94, 094102 (2016)
We have studied the atomic and magnetic structure of the dilute ferromagnetic semiconductor system (Ba,K)(Zn,Mn)$_2$As$_2$ through atomic and magnetic pair distribution function analysis of temperature-dependent x-ray and neutron total scattering dat
Externí odkaz:
http://arxiv.org/abs/1608.02684
Autor:
Frandsen, Benjamin A., Liu, Lian, Cheung, Sky C., Guguchia, Zurab, Khasanov, Rustem, Morenzoni, Elvezio, Munsie, Timothy J. S., Hallas, Alannah M., Wilson, Murray N., Cai, Yipeng, Luke, Graeme M., Chen, Bijuan, Li, Wenmin, Jin, Changqing, Ding, Cui, Guo, Shengli, Ning, Fanlong, Ito, Takashi U., Higemoto, Wararu, Billinge, Simon J. L., Sakamoto, Shoya, Fujimori, Atsushi, Murakami, Taito, Kageyama, Hiroshi, Alonso, Jose Antonio, Kotliar, Gabriel, Imada, Masatoshi, Uemura, Yasutomo J.
Metal-to-insulator transitions (MITs) are a dramatic manifestation of strong electron correlations in solids1. The insulating phase can often be suppressed by quantum tuning, i.e. varying a nonthermal parameter such as chemical composi- tion or press
Externí odkaz:
http://arxiv.org/abs/1603.06971
Autor:
Jiang, Shan, Liu, Lian, Schutt, Michael, Hallas, Alannah M., Shen, Bing, Tian, Wei, Emmanouilidou, Eve, Shi, Aoshuang, Luke, Graeme M., Uemura, Yasutomo J., Fernandes, Rafael. M., Ni, Ni
Publikováno v:
Phys. Rev. B 93, 174513 (2016)
We report the transport, thermodynamic, $\mu$SR and neutron study of the Ca$_{0.74(1)}$La$_{0.26(1)}$(Fe$_{1-x}$Co$_{x}$)As$_{2}$ single crystals, mapping out the temperature-doping level phase diagram. Upon Co substitution on the Fe site, the struct
Externí odkaz:
http://arxiv.org/abs/1603.04899